.UPDATE...NWS METEOROLOGISTS SURVEYED DAMAGE OVER REDSTONE ARSENAL
THAT OCCURRED FROM SEVERE STORMS ON THURSDAY, APRIL 11. THE DAMAGE
WAS DETERMINED TO BE FROM A TORNADO -- THE SAME TORNADO THAT DID THE
LILY FLAGG/HUNTSVILLE DAMAGE. THIS UPDATE WILL ADJUST THE START
POINT/TIME AND THE PATH LENGTH FOR THE LILY FLAGG/HUNTSVILLE TORNADO.
SEE BELOW FOR MORE DETAILS.
.LILY FLAGG/HUNTSVILLE TORNADO...
** UPDATED APRIL 16 TO INCLUDE REDSTONE ARSENAL DAMAGE **
RATING: EF-1
ESTIMATED PEAK WIND: 90 MPH
PATH LENGTH /STATUTE/: 6.60 MILES ** UPDATED **
PATH WIDTH /MAXIMUM/: 300 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 04/11/2013
START TIME: 420 PM CDT ** UPDATED **
START LOCATION: NEAR REDSTONE RD/PATTON RD SW ** UPDATED **
START LAT/LON: 34.6146 / -86.6387 ** UPDATED **
END DATE: 04/11/2013
END TIME: 428 PM CDT
END LOCATION: HAVEN ST SE
END LAT/LON: 34.6651 / -86.5405
SURVEY SUMMARY: /UPDATED APRIL 16/ A TORNADO TOUCHED DOWN ON THE
SOUTHEAST AREA OF REDSTONE ARSENAL NEAR THE INTERSECTION OF REDSTONE
ROAD SW AND PATTON ROAD SW. DAMAGE WAS SEEN JUST NORTHEAST OF THIS
LOCATION AS SEVERAL SMALL TO MEDIUM-SIZED TREES WERE SNAPPED ALONG
MAGAZINE ROAD. ABOUT A HALF MILE NORTHEAST...OFF SANDPIPER ROAD...
MINOR STRUCTURAL DAMAGE OCCURRED TO A MEDIUM-SIZED METAL BUILDING
SYSTEM /MBS/ WITH 2 PORTIONS OF A WEST-FACING WALL BLOWN OUT. DEBRIS
FROM THE WALLS AND SMALL PORTIONS OF THE ROOF WERE THROWN TO THE
NORTHWEST...PERPENDICULAR TO THE STORM MOTION/TRACK. SEVERAL PINE TREES
WERE SNAPPED/UPROOTED IN THIS AREA AS WELL. THE TORNADO CONTINUED ITS
TRACK NORTHEAST TOWARDS THE EASTERN EDGE OF THE ARSENAL PERIMETER...
WHERE SEVERAL LARGER TREES WERE SNAPPED AND UPROOTED. BETWEEN THIS
POINT AND THE 9000 BLOCK OF CRAIGMONT ROAD SW...IT IS MOSTLY
TERRAIN/VEGETATION...MAKING IT DIFFICULT FOR GROUND SURVEYS. HOWEVER...
BASED ON ANALYSIS OF RADAR DATA...THERE IS SUFFICIENT EVIDENCE THAT
SUPPORTS THE TORNADO CONTINUED ITS TRACK NORTHEAST AND CONNECTED WITH
THE DAMAGE BEGINNING AROUND CRAIGMONT ROAD.
NOTE: THE STATISTICS ON THIS TORNADO HAVE BEEN UPDATED TO REFLECT THE
CHANGES MENTIONED ABOVE. THE REST OF THE INFORMATION BELOW /FROM
FRIDAY...APRIL 12/ REMAINS UNCHANGED.
THE TORNADO CONTINUED TO TRACK TOWARD THE WEST SIDE OF MEMORIAL PARKWAY
IN THE 9000 BLOCK OF CRAIGMONT DRIVE. IN THIS AREA...SEVERAL LARGE
TREES WERE SNAPPED OR UPROOTED WITH AT LEAST ONE FALLING ON THE BACK OF
A HOUSE. THE TORNADO MOVED NORTHEAST CROSSING THE PARKWAY WITH TREES
SNAPPED ALONG OLDFIELD ROAD. EXTENSIVE POWER LINE AND POWER POLE DAMAGE
WAS NOTED AT THE INTERSECTION OF WHITESBURG DRIVE AND LILY FLAGG ROAD.
SEVERAL WOODEN POLES WERE SNAPPED NEAR THE BASE AND A STREET LIGHT WAS
SNAPPED AT THE BASE AS WELL. SEVERAL BUSINESS SIGNS WERE BLOWN OUT IN
THE AREA. THE TORNADO WAS LIKELY AT ITS STRONGEST POINT IN THIS AREA
REACHING EF-1 INTENSITY.
THE TORNADO THEN MOVED ACROSS SEVERAL RESIDENTIAL NEIGHBORHOODS
SNAPPING AND UPROOTING BOTH SOFT AND HARDWOOD TREES. MINOR DAMAGE TO
ROOFS...MAINLY FROM FALLING TREES...WAS ALSO NOTED. A LARGE TREE FELL
ON A HOUSE ON VALLEY VIEW DRIVE CAUSING MAJOR DAMAGER TO THE HOME.
THE OCCUPANTS RELAYED THAT THEY HEARD THE SIRENS AND TOOK COVER
SEVERAL MINUTES BEFORE THE TREE FELL THROUGH THE DINING ROOM.
THE TORNADO CROSSED HICKORY HILL ROAD SNAPPING TREES AND EVENTUALLY
CAUSING MINOR TREE DAMAGE IN THE VALLEY HILL COUNTRY CLUB AREA. THE
TORNADO FINALLY LIFTED NEAR HAVEN STREET JUST WEST OF BAILEY COVE
ROAD.
SURVEYED BY: BURGETT/LATIMER/DARDEN/NADLER

RATING: EF-1
ESTIMATED PEAK WIND: 105 MPH
PATH LENGTH /STATUTE/: 1.33 MILES
PATH WIDTH /MAXIMUM/: 75 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 04/11/13
START TIME: 432 PM CDT
START LOCATION: DUG HILL ROAD AT CHEVAL
START LAT/LON: 34.7017/-86.5049
END DATE: 04/11/13
END TIME: 434 PM CDT
END LOCATION: DUG HILL ROAD JUST NORTH OF RAINTREE ROAD
END LAT/LON: 34.7148/-86.4876
SURVEY SUMMARY: THE SAME CIRCULATION THAT SPAWNED THE LILY FLAGG
TORNADO CAUSED AN ADDITIONAL SHORT-LIVED TORNADO THAT TOUCHED DOWN
ALONG DUG HILL ROAD NEAR THE CHEVAL BLVD (CHEVAL NEIGHBORHOOD). AT
THIS LOCATION...SEVERAL HARDWOOD TREES WERE UPROOTED AND SEVERAL
POWER POLES WERE SNAPPED. IN ADDITION...LARGE CEDAR TREES AND OTHER
SMALLER SOFTWOOD TREES WERE SNAPPED AND TWISTED FURTHER DOWN DUG
HILL ROAD. FURTHER EAST-NORTHEAST...A LARGE SWATH OF CEDAR TREES AND
OTHER HARDWOOD TREES WERE SNAPPED OR UPROOTED...WITH SEVERAL SNAPPED
NEAR THE BASE...WHICH WAS CONSISTENT WITH EF-1 DAMAGE. A ROOF WAS
ALSO RIPPED OFF A BARN ON THE EAST SIDE OF DUG HILL. THE TORNADO
THEN LIFTED JUST NORTH OF RAINTREE ROAD.
SURVEYED BY: BURGETT...LATIMER...AND DARDEN.
EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES.
EF0...WEAK......65 TO 85 MPH
EF1...WEAK......86 TO 110 MPH
EF2...STRONG....111 TO 135 MPH
EF3...STRONG....136 TO 165 MPH
EF4...VIOLENT...166 TO 200 MPH
EF5...VIOLENT...>200 MPH